// Copyright 2020 the V8 project authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. d8.file.execute('test/mjsunit/wasm/wasm-module-builder.js'); // This test is shrunk from a test case provided at https://crbug.com/v8/10831. // This exercises a aligned-load bug in ia32. Some SIMD operations were using // instructions that required aligned operands (like movaps and movapd), but we // don't have the right memory alignment yet, see https://crbug.com/v8/9198, // resulting in a SIGSEGV when running the generated code. const builder = new WasmModuleBuilder(); builder.addType(makeSig([], [kWasmI32])); // Generate function 1 (out of 1). builder.addFunction(undefined, 0 /* sig */) .addBodyWithEnd([ // signature: i_v // body: kExprI32Const, 0xfc, 0xb6, 0xed, 0x02, // i32.const kSimdPrefix, kExprI8x16Splat, // i8x16.splat kExprI32Const, 0xfc, 0x00, // i32.const kSimdPrefix, kExprI8x16Splat, // i8x16.splat kSimdPrefix, kExprI64x2Sub, 0x01, // i64x2.sub kExprI32Const, 0x00, // i32.const kSimdPrefix, kExprI8x16Splat, // i8x16.splat kExprI32Const, 0x81, 0x96, 0xf0, 0xe3, 0x07, // i32.const kSimdPrefix, kExprI8x16Splat, // i8x16.splat kSimdPrefix, kExprF64x2Max, 0x01, // f64x2.max kSimdPrefix, kExprI64x2Sub, 0x01, // i64x2.sub kExprI32Const, 0x00, // i32.const kSimdPrefix, kExprI8x16Splat, // i8x16.splat kExprI32Const, 0x00, // i32.const kExprI32Const, 0x0b, // i32.const kExprI32LtU, // i32.lt_u kSimdPrefix, kExprI8x16ReplaceLane, 0x00, // i8x16.replace_lane kExprI32Const, 0xfc, 0xf8, 0x01, // i32.const kSimdPrefix, kExprI8x16Splat, // i8x16.splat kSimdPrefix, kExprF64x2Max, 0x01, // f64x2.max kSimdPrefix, kExprI16x8MaxS, 0x01, // i16x8.max_s kSimdPrefix, kExprI8x16AllTrue, // i8x16.all_true kExprEnd, // end @70 ]); builder.addExport('main', 0); const instance = builder.instantiate(); print(instance.exports.main());